Lecture_09

Lecture_09 - Lecture 9 Overview of Metabolism BBOM 11e Sec...

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Lecture 9 Redox Review Fermentation BBOM 11e Sec. 5.4-5.8 BBOM 11e Sec. 5.9-5.10, 17.19-17.20 (Appendix I) Overview of Metabolism BBOM 11e Sec. 2.4
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Overview of Metabolism Energy Sources: Chemicals Light Waste Products: Acids Alcohols CO 2 H 2 O, … BIOSYNTHESIS Cellular and Population Growth Anabolism: All biosynthetic (ATP-consuming) reactions Catabolism: All reactions in the cell leading to Energy (ATP) production Resources from environment or growth medium
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Classes of Microorganisms Based on Source of Energy Classes of Organisms Based on Energy Sources: More terms to remember Light Phototroph Chemical Chemotroph Organic Chemoorgan otroph Inorganic Chemolitho troph Source Class Microbes can get energy for growth from many different sources Read: BBOM 11e Sec 2.4
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Redox Reactions The Electron Tower and Redox Reactions Cells harvest energy from H 2 2H+ + 2e- (Oxidation) (Reduction) 2H+ + 2e- + ½ O 2 H 2 O (Overall Rnx) H 2 + ½ O 2 => H 2 O The Electron Tower: Gives reduction potentials of redox couples G’o = -nF Eo’ = -2 x 96.48 kJ/V x 1.24 V = -239.27 kJ /mol Free Energy Yield Eo’ See BBOM 11e Appendix I 1.24V e- DONOR e- ACCEPTOR
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Electron Carriers NAD and NADP Nicotinamide Adenine Dinucleotide Redox Coenzymes NAD NADP 2H+ + 2e-
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Lecture_09 - Lecture 9 Overview of Metabolism BBOM 11e Sec...

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